unfortunately, we don't have that control anymore with NAV2013. In forms, we had the property "NextControl" where you could define the order of fields that will get the focus when you enter data. Now, this feature is gone.

Hi Naresh,
Today this functionality has been semi-replaced by the ability to define QuickEntry fields. This allows you to point out which fields are important and which are not, so that an enter will bring you to the next quick field.
On top of that, the new functionality is incorporated into the user personalizations, so that it can be changed on a profile and user level.